// The MIT License
//
// Copyright (c) 2016 Dariusz Bukowski
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#import <Foundation/Foundation.h>

/**
 `DBCoreDataFilterOperator` is an object encapsulating the information about the operator used in filtering.
 */
@interface DBCoreDataFilterOperator : NSObject

/**
 Creates and returns a new instance with given display name and predicate string.
 
 @param displayName The name that will be presented to the user.
 @param predicateString The `NSString` instance that will be used in `NSPredicate` instance creation.
 */
+ (instancetype)filterOperatorWithDisplayName:(NSString *)displayName predicateString:(NSString *)predicateString;

/**
 The operator name that will be presented to the user.
 */
@property (nonatomic, readonly) NSString *displayName;

/**
 The `NSString` instance used in `NSPredicate` instance creation.
 */
@property (nonatomic, readonly) NSString *predicateString;

@end
